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10-44
2.
Connect the in-line fuel filter
throttle cable, choke heat tube, and
distributor
vacuum line.
Position the
heater hose behind the choke shield.
3.
Connect the choke clear air tube
to the air horn.
4.
Adjust the engine idle speed, the
idle fuel mixture, anti-stall dashpot
(if
so
equipped) and the accelerating pump
stroke
(if
required). Install the air cleaner.
DISASSEMBLY
To facilitate working on the car-
burettor and to prevent damage to the
throttle plates, install carburettor legs on
the base. If legs are unavailable, install
4
bolts (about 2 I /4 inches long of the
correct diameter) and 8 nuts on the
carburettor base.
Use a separate container for the
component parts of the various assemblies
to
facilitate
cleaning,
inspection and
assembly.
The
following
is
a
step-by-step
sequence of operations for completely
overhauling the carburettor. However,
certain components of the carburettor may
be serviced without a complete dis-
assembly of the entire unit. For a com-
plete carburettor overhaul, follow all
of the steps. to partially overhaul a
carburettor or to install a new gasket kit
follow only the applicable steps.
AIR HORN
1.
Remove the air cleaner anchor
screw.
2.
Remove
the
automatic choke
control rod retainer.
3.
Remove the air horn retaining
screws, lock washers and the carburettor
identification tag. Remove the air horn
and air horn gasket.
FAST IDLE CAM
82621-A
FIG. 19 -Fast Idle Cam and Fast Idle Lever
4.
Remove the choke control rod by
loosening the screw that secures the choke
shaft lever to the choke shaft. Remove the
GROUP 10-
FUEL SYSTEM
rod from the air horn. Slide the plastic
dust seal out of the air
horn.
5.
Remove
the choke diaphragm
assembly (Fig. 18).
6.
If it is necessary to remove the
choke plate, remove the staking marks on
the
choke plate retaining screws and
remove the screws. Remove the choke
plate by sliding it out of the shaft from
the top of the air horn. Slide the choke
shaft out of the air horn
.
If the tips of the choke plate screws
are flared excessively, file off the flared
portion to prevent damage to the threads
in the shaft.
FLOAT HINGE
FIG. 20- Float Assembly
AUTOMATIC CHOKE
82605-A
1.
Remove the fast idle cam retainer
(Fig. 19).
2.
Remove the thermostatic choke
spring
housing
retaining
screws
and
remove the clamp, housing and gasket.
3.
Remove
the
choke
housing
assembly retaining screws. If the air horn
was not previously removed, remove the
choke control rod retainer. Remove the
choke housing assembly, gasket and fast
idle cam and rod from the fast idle cam
lever.
4.
Remove the choke lever retaining
screw and washer. Remove the choke lever
and fast idle cam lever from the choke
housing.
MAIN BODY
1.
With the use of a screwdriver, pry
the float shaft retainer from the fuel inlet
seal (Figs. 20 and 21). Remove the float
float slpft retainer and fuel inlet needle
assembly. Remove the retainer and float
snaft from the float lever.
2.
Remove the fuel inlet needle,
seat, filter screen, and the main jets with a
jet wrench.
3.
Remove the booster venturi screw
(accelerator
pump
di>charge)
,
air
FIG. 21 -Float Shaft Retainer Removal
or Installation
distribution plate, booster venturi and
gasket. Invert the main body and let the
a.:celerating pump discharge weight and
ball fall into the hand.
4.
Remove
the accelerator pump
operating rod from the over-travel lever
and the retainer. To release the operating
rod from the over-travel lever retainer,
press the ends of the retainer together;
then, at the same time, press the rod away
from the retainer until it is disengaged.
Remove the rod and retainer.
5.
Remove the accelerating pump
cover retaining
screws.
Remove
the
accelerating
pump
cover,
diaphragm
assembly and spring (Fig. 22).
6.
If it is necessary to remove the
Elastomer valve, grasp it firmly and pull it
out. If the Elastomer valve tip broke off
during removal, be sure to remove the tip
from the fuel bowl. An Elastomer valve
must be replaced whenever it has
been
removed from the carburettor.
7.
Invert the main body and remove
the power valve cover and the gasket.
Remove the power valve with a box
wrench or socket wrench (Fig. 23).
Remove the power valve gasket. Discard
the gasket.
8.
Remove the idle fuel mixture
adjusting screws (needles) and the springs.
Remove the limiters from the adjusting
screws.
9.
If necessary, remove the nut and
washer securing the fast idle adjusting
lever assembly to the throttle shaft, and
remove the lever assembly. If necessary,
remove the idle screw and the retainer
from the fast idle adjusting lever.
10. Remove the anti-stall dashpot or
solenoid (if so equipped).
11. If it is necessary to remove the
throttle plates, lightly scribe the throttle
plates along the throttle shaft, and mark
each plate and its corresponding bore with
a number or letter for proper installation
(Fig. 24).
12. Slide the throttle shaft out of the
main
body.
Clean and inspect the carburettor
component
parts
as
described
in
Page 10-13.
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